Grodan Pro Delta 4 Block, 3" x 3" x 2.5" with hole, case of 384, Commercial lighting-accessories Use this product to assist

Use this product to assist water infiltration

Includes diffuse panel for horizontal configuration

This guarantees absence of heavy metals or other contaminates

Natural plant oils for the control of Spider Mite infestations

Grodan Pro Delta 4 Block, 3" x 3" x 2.5" with hole, case of 384, Commercial lighting-accessories Use this product to assistGrodan Stonewool (rockwool) is made from molten rock spun into cotton candy like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen